These will be used to create a synthetic file for all the commands in the command buffer, which can be stepped over using the new debugger.

Bug: b/145351270
Change-Id: If5728463c1cf333d635c46e2d3b6314ce7d27326
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/38910Tested-by: Ben Clayton <bclayton@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>
Kokoro-Presubmit: kokoro <noreply+kokoro@google.com>